Commit Message

In this example, first it will create some qcow2 images, then try get
information including backing file relationship, then it will do sync IO on
the image.
v11:
Use only gtester option -k, to avoid silent fail for segment fault.
Little change according to API.
Signed-off-by: Wenchao Xia <xiawenc@linux.vnet.ibm.com>
---
tests/Makefile | 5 +-
tests/check-libqblock-qcow2.c | 390 ++++++++++++++++++++++++++++++++++++++++-
2 files changed, 392 insertions(+), 3 deletions(-)